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|
S = "${WORKDIR}/linux"
# Determine which branch to fetch and build. Not all branches are in the
# upstream repo (but will be locally created after the fetchers run) so
# a fallback branch needs to be chosen.
#
# The default machine 'UNDEFINED'. If the machine is not set to a specific
# branch in this recipe or in a recipe extension, then we fallback to a
# branch that is always present 'standard'. This sets the KBRANCH variable
# and is used in the SRC_URI. The machine is then set back to ${MACHINE},
# since futher processing will use that to create local branches
python __anonymous () {
import bb, re, string
version = bb.data.getVar("LINUX_VERSION", d, 1)
# 2.6.34 signifies the old-style tree, so we need some temporary
# conditional processing based on the kernel version.
if version == "2.6.34":
bb.data.setVar("KBRANCH", "${KMACHINE}-${LINUX_KERNEL_TYPE}", d)
bb.data.setVar("KMETA", "wrs_meta", d)
mach = bb.data.getVar("KMACHINE", d, 1)
if mach == "UNDEFINED":
bb.data.setVar("KBRANCH", "standard", d)
bb.data.setVar("KMACHINE", "${MACHINE}", d)
# track the global configuration on a bootstrapped BSP
bb.data.setVar("SRCREV_machine", "${SRCREV_meta}", d)
bb.data.setVar("BOOTSTRAP", bb.data.expand("${MACHINE}",d) + "-standard", d)
else:
# The branch for a build is:
# yocto/<kernel type>/${KMACHINE} or
# yocto/<kernel type>/${KMACHINE}/base
mach = bb.data.getVar("KMACHINE_" + bb.data.expand("${MACHINE}",d), d, 1)
if mach == None:
mach = bb.data.getVar("KMACHINE", d, 1)
bb.data.setVar("KBRANCH", mach, d)
bb.data.setVar("KMETA", "meta", d)
# drop the "/base" if it was on the KMACHINE
kmachine = mach.replace('/base','')
# drop everything but the last segment
kmachine = os.path.basename( kmachine )
# and then write KMACHINE back
bb.data.setVar('KMACHINE_' + bb.data.expand("${MACHINE}",d), kmachine, d)
if mach == "UNDEFINED":
bb.data.setVar('KMACHINE_' + bb.data.expand("${MACHINE}",d), bb.data.expand("${MACHINE}",d), d)
bb.data.setVar("KBRANCH", "yocto/standard/base", d)
bb.data.setVar("SRCREV_machine", "standard", d)
bb.data.setVar("BOOTSTRAP", "yocto/standard/" + bb.data.expand("${MACHINE}",d), d)
}
do_patch() {
cd ${S}
if [ -f ${WORKDIR}/defconfig ]; then
defconfig=${WORKDIR}/defconfig
fi
kbranch=${KBRANCH}
if [ -n "${BOOTSTRAP}" ]; then
# switch from a generic to a specific branch
kbranch=${BOOTSTRAP}
fi
# simply ensures that a branch of the right name has been created
createme ${ARCH} ${kbranch} ${defconfig}
if [ $? -ne 0 ]; then
echo "ERROR. Could not create ${kbranch}"
exit 1
fi
# updates or generates the target description
if [ -n "${KERNEL_FEATURES}" ]; then
addon_features="--features ${KERNEL_FEATURES}"
fi
updateme ${addon_features} ${ARCH} ${WORKDIR}
if [ $? -ne 0 ]; then
echo "ERROR. Could not update ${kbranch}"
exit 1
fi
# executes and modifies the source tree as required
patchme ${kbranch}
if [ $? -ne 0 ]; then
echo "ERROR. Could not modify ${kbranch}"
exit 1
fi
}
do_kernel_checkout() {
if [ -d ${WORKDIR}/.git/refs/remotes/origin ]; then
echo "Fixing up git directory for ${LINUX_KERNEL_TYPE}/${KMACHINE}"
rm -rf ${S}
mkdir ${S}
mv ${WORKDIR}/.git ${S}
if [ -e ${S}/.git/packed-refs ]; then
cd ${S}
rm -f .git/refs/remotes/origin/HEAD
IFS='
';
for r in `git show-ref | grep remotes`; do
ref=`echo $r | cut -d' ' -f1`;
b=`echo $r | cut -d' ' -f2 | sed 's%refs/remotes/origin/%%'`;
dir=`dirname $b`
mkdir -p .git/refs/heads/$dir
echo $ref > .git/refs/heads/$b
done
cd ..
else
cp -r ${S}/.git/refs/remotes/origin/* ${S}/.git/refs/heads
rmdir ${S}/.git/refs/remotes/origin
fi
fi
cd ${S}
# checkout and clobber and unimportant files
git checkout -f ${KBRANCH}
}
do_kernel_checkout[dirs] = "${S}"
addtask kernel_checkout before do_patch after do_unpack
do_kernel_configme() {
echo "[INFO] doing kernel configme"
cd ${S}
configme --reconfig --output ${B}
if [ $? -ne 0 ]; then
echo "ERROR. Could not configure ${KMACHINE}-${LINUX_KERNEL_TYPE}"
exit 1
fi
echo "# Global settings from linux recipe" >> ${B}/.config
echo "CONFIG_LOCALVERSION="\"${LINUX_VERSION_EXTENSION}\" >> ${B}/.config
}
do_kernel_configcheck() {
echo "[INFO] validating kernel configuration"
cd ${B}/..
kconf_check ${B}/.config ${B} ${S} ${B} ${LINUX_VERSION} ${KMACHINE}-${LINUX_KERNEL_TYPE}
}
# Ensure that the branches (BSP and meta) are on the locatios specified by
# their SRCREV values. If they are NOT on the right commits, the branches
# are reset to the correct commit.
do_validate_branches() {
cd ${S}
branch_head=`git show-ref -s --heads ${KBRANCH}`
meta_head=`git show-ref -s --heads ${KMETA}`
target_branch_head="${SRCREV_machine}"
target_meta_head="${SRCREV_meta}"
# nothing to do if bootstrapping
if [ -n "${BOOTSTRAP}" ]; then
return
fi
current=`git branch |grep \*|sed 's/^\* //'`
if [ -n "$target_branch_head" ] && [ "$branch_head" != "$target_branch_head" ]; then
if [ -n "${KERNEL_REVISION_CHECKING}" ]; then
ref=`git show ${target_meta_head} 2>&1 | head -n1 || true`
if [ "$ref" = "fatal: bad object ${target_meta_head}" ]; then
echo "ERROR ${target_branch_head} is not a valid commit ID."
echo "The kernel source tree may be out of sync"
exit 1
else
echo "Forcing branch $current to ${target_branch_head}"
git branch -m $current $current-orig
git checkout -b $current ${target_branch_head}
fi
fi
fi
if [ "$meta_head" != "$target_meta_head" ]; then
if [ -n "${KERNEL_REVISION_CHECKING}" ]; then
ref=`git show ${target_meta_head} 2>&1 | head -n1 || true`
if [ "$ref" = "fatal: bad object ${target_meta_head}" ]; then
echo "ERROR ${target_meta_head} is not a valid commit ID"
echo "The kernel source tree may be out of sync"
exit 1
else
echo "Forcing branch meta to ${target_meta_head}"
git branch -m ${KMETA} ${KMETA}-orig
git checkout -b ${KMETA} ${target_meta_head}
fi
fi
fi
# restore the branch for builds
git checkout -f ${KBRANCH}
}
# Many scripts want to look in arch/$arch/boot for the bootable
# image. This poses a problem for vmlinux based booting. This
# task arranges to have vmlinux appear in the normalized directory
# location.
do_kernel_link_vmlinux() {
if [ ! -d "${B}/arch/${ARCH}/boot" ]; then
mkdir ${B}/arch/${ARCH}/boot
fi
cd ${B}/arch/${ARCH}/boot
ln -sf ../../../vmlinux
}
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